Wood Ann R, Apte Smita, MacAvoy Elizabeth S, Gardner Jonathan P A
Centre for Marine Environmental and Economic Research, School of Biological Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand.
Mol Phylogenet Evol. 2007 Aug;44(2):685-98. doi: 10.1016/j.ympev.2006.12.019. Epub 2006 Dec 31.
A molecular phylogeny is presented for marine mussels of the genus Perna, based on nuclear (ITS1,ITS2) and mitochondrial (COI) DNA sequence data. The three generally recognised species (Perna viridis, Perna perna and Perna canaliculus) and one putative species (Perna picta) were each sampled from several locations within their known geographic distributions. A range of phylogenetic analyses was used to investigate the current taxonomic assignments, evolutionary relationships and the biogeographical history of the genus. The different analyses produced similar, well supported topologies and verified the monophyly of the genus with respect to five mytilid outgroup species. P. perna (Atlantic), P. viridis (Indo-West Pacific), and P. canaliculus (New Zealand) each formed distinct clades, confirming their specific status. Putative P. picta from North Africa clustered within the P. perna clade and is not regarded as a separate species. P. perna and P. canaliculus were the most closely related of the three species. Possible biogeographic explanations for the present species distributions are evaluated.
基于核基因(ITS1、ITS2)和线粒体基因(COI)的DNA序列数据,构建了贻贝属海洋贻贝的分子系统发育树。三个普遍认可的物种(翡翠贻贝、南非贻贝和新西兰贻贝)以及一个假定物种(彩绘贻贝)均从其已知地理分布范围内的多个地点采集样本。一系列系统发育分析用于研究该属目前的分类归属、进化关系以及生物地理历史。不同的分析产生了相似且得到充分支持的拓扑结构,并验证了该属相对于五个贻贝科外类群物种的单系性。南非贻贝(大西洋)、翡翠贻贝(印度 - 西太平洋)和新西兰贻贝(新西兰)各自形成了不同的分支,确认了它们的物种地位。来自北非的假定彩绘贻贝聚集在南非贻贝分支内,不被视为一个单独的物种。南非贻贝和新西兰贻贝是这三个物种中关系最密切的。评估了当前物种分布可能的生物地理解释。